Super unique pedal from Copilot FX! This pedal is super interesting, without anything plugged into the additional jack on the side, this pedal adds a glitchy/droney octave up, which is pretty cool on its own. Additionally, if you plug in a  fixed frequency source into the jack it turns into a ring modulator, plugging another instrument it turns into an "awesome machine of sonic euphoria and blistering joy". I will add the full description from Copilot FX below.

Pedal is in great shape! Shows some normal cosmetic wear from use, but everything functions as it should

This is the original 4 knob version. 

From Copilot FX,

Caracol (seashell in spanish) is a Droney Octave up when nothing is plugged into the external jack, plugging a fixed frequency source into the jack it turns into a ring modulator, plugging another instrument it turns into an awesome machine of sonic euphoria and blistering joy (IF both the instrument and the source are playing the same harmonies) or a sonic chaotic monster that will totally destroy the input (if the source and the instrument are playing in their own ways), but no matter how you use it, the Caracol will let you open some sonic doors and conquer tones you never thought could get, the only limitation is your imagination and creativity.

Includes pictured unit only. No additional accessories or power cable.

We have shipped hundreds of instruments and other music related items and can assure you your new gear will be packed professionally with the utmost care, using high quality materials.

Please see pictures for exact condition and details

If you have any questions please let me know. Thanks for looking!